DS is 26 months and still RF. He's getting close to outgrowing the seat RF by height. (He's almost 1 inch from the top of the shell. Weight wise he's ok. He's 30 lb and it goes to 35). But I'm planning to get another seat so he can RF longer. I figure by that time DS2 will be ready to be out of the bucket, and then we'll need another convertible car seat by then anyway. If I didn't have to buy another seat, I'd probably just turn DS1 when he outgrew the seat, but since I have to buy another one, I'm going to get one that ensures he can RF even longer.
My dad recently was giving me a hard time about having DS1 rearfacing. I really don't understand why he cares which way DS1 faces. He never has to drive him anywhere. My husband would probably turn DS1 if he had his way, but he knows better than to start the argument with me :) He probably just figures it's easier to keep DS1 RF than to try to convince me otherwise.
I know 1 person IRL that does extended RF. I also know a bunch of people with babies younger than mine, so we'll see if they end up turning their babies at 1 year of age.